Automotive Bulb Sockets Molex Automotive Bulb Sockets offer high-quality performance in a wide selection of components. These sockets meet the needs of transportation applications for safety, performance, and ruggedness. These sockets are constructed of durable high-temperature material, and waterproof sealing options are available. With a wide variety of keying and color options, Molex Automotive Bulb Sockets meet various application needs.